Elevator-valve-controlling mechanism



(No Model.)

L. M. HOSEA. ELEVATOR VALVE CONTROLLING MEGHANISM. No. 430,125.

Patented June 17, 1890 THE norms PETERS co., PHOTO-film, msumm'cu, o. c.

UNITED STATES PATENT FFIC-E.

LEWIS M. HOSEA, OF CINCINNATI, OHIO.

ELEVATOR-VALVE-CONTROLLING MECHANISM.

SPECIFICATION forming part of Letters Patent No. 430,125, dated June 17,1890.

- Application filed January 23, 1890. Serial No. 337,815. (No model.)

To all whom it may concern.-

Be it known that I, LEWIS M. HOSEA, a citizen of the United States,residing at Cincinnati, in the county of Hamilton and State of Ohio,have invented new and useful Improvements in Elevator-Valve-Controlliu gMechanisms, of which the following is a specification.

' My invention relates to means for controlling the valve mechanism oflifts or elevators from the moving cab or platform, its object being toprovide an inexpensive and efficient mechanism for keeping the valve bywhich the motive power is governed constantly under the control of theattendant on the moving cab.

To this end it consists in a mechanism embodying as a leading principleof construction and operation two ropes carried in vertical parallellines in the path of the elevator, attached at opposite sides to anoscillating lever-0r wheel at the top of the well, and to a valve-movinglever or wheel at the bottom, and actuated by pulleys upon the cab, saidpulleys being geared or otherwise interconnected to rotate normally inopposite directions only and engaging the ropes atdiametrically-opposite points of their peripheries. The valve-ropes maybe a single endless rope suspended at its upper bight upon anidlerpulley at the top of the well, and at its lower bight around asimilar pulley connected with the valve at the bottom of the well. Therope at each side enters upon and leaves its adjacent pulley at the samerelative point in opposite vertical directions, and may pass thence atopposite sides of said pulley in a reversed loop or bight around theopposite pulley; or each rope may engage with but one of the pulleys,the pulleys in such case being independently interconnected-as, forexample, by spur-gearing. In the movements of the cab the pulleys travelup and down the ropes freely, rotating in opposite directions; but uponchanging the angular relation of the two pulleys as a pair to the ropes(by the use of amanipulating-lever or other mechanism upon the cab) oneof said ropes is temporarily elevated and the other depressed,

thereby controlling the valve, and the two maintained in such newrelations Without interfering with the vertical travel of the engagingpulleys.

Mechanism embodying my invention is illustrated in the accompanyingdrawings, in which Figure 1 is a general diagram side elevation of anelevator-cab, valve-ropes, and connections, and a preferred form ofvalve-controlling mechanism constructed according to my invention; Fig.2, a partial front elevation of the cab, (somewhat enlarged,) showing anedge or side elevation of the valvecontrolling devices; Fig. 3, a planelevation of the controlling-pulleys, showing the relation of thevalve-ropes thereto; Fig. 4, a side elevation of a slightly modifiedconstructive form of my invention; Fig. 5, apartial plan view of thesame, showing the construction of the pressure device, and all thefigures herein exhibiting constructive forms in the application of thesame principle of operation.

Referring now to the preferred form of the invention illustrated inFigs. 1, 2, and 3, A designates the cab. B B designate the valveropes orthe vertical portions of a single endless rope suspended over a sheave-Gat the top of the elevator-Well, and carried around a similar sheave Dat the bottom of the well. To the latter sheave may be connectedarackand-pinion device '1", or any suitable connections, moving thevalve-stem'u. Where separate ropes are used, levers L (indicated bydotted lines) maybe substituted for the sheaves O and D, and the ropessecured to corresponding opposite ends of said levers above and below.

Upon the moving cab two sheaves E E are I mounted in a horizontal linebetween and in the plane of the vertical ropes B and B. These sheavesare carried upon terminal studs 8 s at the face of a lever F, rigidlysecured 'to a central pivot-stud 19, carried in bearings a a upon thecab. This construction permits the pulleys E E to be carried outsideofthe cab A, while the stud 19 projects through for engagement itengages the outer groove (farthest from the cab) of pulley E, around theunder side of said pulley, thence upward across the outer groove ofpulley E and completely around the same, thence to the central groove ofpulley E, around its under side, and leaves the pulley E at the samerelative outer point adjacent to its entrance and in the samedirectionto wit, downward, to its terminal engagement. The rope B istraced in substantially the same manner, but in relatively oppositegrooves, so that there is no contact or interference of the ropes, andthe change of alignment in reaching relatively opposite grooves inopposite pulleys may be facilitated by slightly canting the pulleys inopposite directions in the well-known man-' ner ofcable constructions.

The operation is as follows, the cab being at rest and adjustment beingsuch that when the lever G stands vertical the valve-lever L is inmid-position and the valve closed. The lever Gr being now thrown, forexample, to the right, the rope B will be pulled upward and the rope Bwill be pulled downward, the pulleys E E being prevented from rotationby the interconnection of the ropes upon the pulleys E E in oppositedirections. This movement of the valve-ropes opens the valve and causesthe elevator-car to move upward. The pulleys E and E, being free torotate in opposite directions, (though not in the same direction,)travel freely up the'ropes, and the lever G may be at any time drawnback partly or wholly to its original position, and the valve thusregulated or again closed. It will be seen that the movement of the cabdoes not afiect the control of the valve-ropes, since the effect ismerely to rotate the pulleys E E in opposite directions equally; butthat any change in the angular relationsof the pulleys as a pair to thevalve-ropes involves arotation of the pulleys in the same direction, andconsequently a shifting of the ropes vertically in relation to eachother.

The modification shown in Figs. 4: and 5 involves a slight change inmechanical construction, but not of principle. The pulleys E and E inthis case are provided with an intermeshing set of gear-teeth or othermeans of compelling their rotation in opposite direct-ions independentlyof the ropes B B themselves.

In Fig. 4 I have indicated in full lines the intermeshing gear-teeth andin dotted lines a crossed belt connection, either of which may be used.I have also shown the valveropes in dotted lines as passing eachindependently around but one-that is, its adjacent pulley-and in fulllines the ropes are shown as passing directly downward, touching thepulleys respectively only at single opposite points. In the latterconstruction the holding-lever F is extended at each side beyond theperipheries of the respective pulleys,'- each being bent over in yokeform, as indicated in the detail View, Fig. 5, as a holdlimits of itstravel.

ing-guide for a small yoke-frame, in which is journaled a grooved roller0. The roller is thus held in the plane of its pulley and against therope, and by an adj usting-screw c threaded through the back of theguideyoke, the pressure upon the valve-rope tending to hold it againstits operating-pulley, may thus be regulated to prevent slipping.

The construction and arrangement of the valve-controlling apparatusherein described facilitates the use of the automatic safety devicesformerly employed in hand -ropes similarly arranged; and to this end Iattach stops cl cl upon the ropes at the top and bottom of the well-holeand engaging guides ff upon the cab, by which the elevator may beautomatically stopped at the upper and lower To the same end I omit theusual holding-catch engaging the handlever G with the rack-bar H, orprovide a catch device that holds by friction only which may be overcomeby a sufiicientlystrong pull upon the rope.

I have not thought it necessary to introduee these details into thedrawings, as many devices commonly known and in use will answer thepurpose.

WVhat I claim is 1. The valve-controllin g mechanism for elevatorsembodying the combination of the valve-ropes, an oscillating suspendingdevice above, an oscillating valve-moving connection below, and theinterconnected sheaves upon the cab between the ropes and engagingtherewith, substantially as set forth.

2. In elevator valve controlling mechanism, the combination of anoscillating suspending device, valve-controlling ropes depending thencein two vertical lines to opposite terminals, a valve-mover, and atraveling controlling device consisting of two sheaves engaging theropes at diametricallyopposite points and interconnected to rotate inopposite directions between and upon the lines of arope, and anoscillating frame upon the cab carrying said sheaves, substantially asset forth.

3. In combination with an elevator-cab and its valve-controlledactuating mechanism, a valve-controlling pulley system upon the cab,embodying two engaging pulleys interconnected to rotate in oppositedirections, an oscillating lever carrying said pulleys, and twovalve-ropes extending in parallel lines from an oscillating suspendingdevice in the well above to the pulleys at respectively opposite sidesof the pulleys, each rope engaging and disengaging its adjacent pulleyat the same relative point, both ropes extending thence in acontinuation of their vertical lines to engagement at opposite sides ofa valve-mover below, substantially as described.

4. The combination and arrangement, in elevator valve-controllingmechanism, of the valve-ropes having an oscillating suspending deviceand a corresponding connection with an oscillatingvalve-mover and theloose-pulley system upon the cab, each rope, respectively, entering fromabove and passing under its adjacent pulley around the opposite pulley,back over the first pulley, and downwardly in the projection of itsoriginal path, whereby the engagement of each pulley with its rope iseffected, and the interconnection of the pulleys with each other is alsoeffected, by the ropes themselves, substantially as described.

5. In an elevator mechanism, the combination, with the valve rope orropes, an oscillating support above, and an oscillating valvemoverbelow, of a rope-shifting device consisting of two pulleys mounted uponan oscillating lever and interconnected with each other to rotate inunison and in opposite directions, each pulley being separately engagedby avalve-r0pe, whereby said pulleys are oppositely rotated in unisonduring their vertical travel without disturbing the relation of 20 theropes to each other, but so that a change in the angular relation of thepulleys will shift the ropes in opposite vertical relations to eachother, substantially as described.

In testimony whereof I have affixed my sig- 2 5

